Coupon Eligible Converter Boxes (CECBs) from the NTIA website. These DTV converter boxes are eligible for purchase using the $40 off coupon from TV Converter Box Coupon Program . Converter boxes with HDTV picture quality, Dolby Digital 5.1 sound outputs, and other advanced features are usually called HDTV Tuners and are not eligible for purchase using the $40 coupon. Click here to shop for an available HDTV Tuner . Use our Store Locator to find a Coupon Program Participating Retailer near you. This list was last updated on January 17th, 2009 using data provided by the NTIA